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Marquise|Natural|GIA

1.20ct L SI2 Marquise Natural Diamond

ID • L/SI2 • GIA 6551582399

Certificate GIA 6551582399

Diamond specifications and retailer prices

From £1,863 GBP
As of November 6, 2026
3 retailers carry this diamond
Most expensive: £3,938 GBP at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded L colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551582399. Listed at 3 retailers as of November 6, 2026. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.20
Carat
L
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551582399
Dimensions10.76 × 5.50 × 3.51 mm
L/W Ratio1.96
Girdle conditionFaceted
Top View
10.76 mm5.50 mm1.20 ctL / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551582399
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NDepth 63.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: £1,624 GBP|Low: £1,398 GBP|High: £2,795 GBP|Avg: £1,957 GBP|-0.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
September 30, 2026
Retailer 2£1,398 GBP
Retailer 1£1,624 GBP
Retailer 7£1,721 GBP
Retailer 6£1,767 GBP
Retailer 3£1,783 GBP
Retailer 8£1,863 GBP
Retailer 5£2,304 GBP
Retailer 9£2,395 GBP
Retailer 4£2,776 GBP

8 data points across 9 retailers

3 retailers

Retailer 1
-
£1,398 GBP
Price last confirmed 38 days ago
B
Retailer 2
-
£1,863 GBP
View
Most Expensive
NZ Jewellers
6de9829d-1cca-404f-87e3-70bb85cab040 · Sep 30
£3,938 GBP
$5,300 USD
View
Price last confirmed 37 days ago
2 more retailers have this diamond
Prices start from £1,863 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B
1.20ct Marquise
£1,863 GBP